ROTARY JOINT WITH EXTENDED LIFE SEAL,申请号AU19920019321-传众专利搜索

ROTARY JOINT WITH EXTENDED LIFE SEAL

申请公布号：AU1932192(A)

申请号：AU19920019321

申请日期：1992.07.01

申请公布日期：1993.03.18

申请人：

THE JOHNSON CORPORATION

发明人：JOHN HENRY PETER;GERALD LEROY TIMM

分类号：F16L27/093;D21F5/02;F16L27/08

主分类号：F16L27/093

摘要：The invention pertains to a rotary joint for use with rotating machinery, such as a dryer drum, where the joint is conveying steam by means of a rotating nipple and sealing structure. The primary elements are a stationary housing comprised of a head (14), body (12) and a wear plate (16), a pickup tube and a spring biased nipple (28) with a collar (36) which engages a molybdenum lubricated reverse radius seal ring (46). Alignment of the components is maintained through the interaction of two guide bearings (30,32) supporting the nipple, the wear plate sealing surface and the nipple collar which is spring biased against a reverse radius seal ring intermediate the wear plate sealing surface and the nipple collar sealing surface. The invention includes a plurality of radial slots (60) defined on the nipple collar sealing surface (52) which reduce seal loading when steam is applied to the joint by reducing the area subjected to a differential pressure, and which lubricate the sealing surface with steam and a dry lubricant impregnated reverse radius seal ring (46) positioned intermediate the wear plate (16) and the nipple collar sealing surfaces (52). <IMAGE>